Percentage Depth Dose in Potential Wood-based Phantom Materials Using Monte Carlo Geant4 Application for Emission Tomography with a 6MV Photon Beam

Abstract

The percentage depth doses of various wood-based phantom materials were  evaluated using Monte Carlo GATE simulation at 6MV photon beam. Several elemental compositions of phantom materials developed over the years were collected retrospectively, and the data were used to build each phantoms’ specific geometries and compositions in a Monte Carlo GATE algorithm. Upon the construction of the linear accelerator in GATE, the percentage depth doses were measured for each of the phantom materials, and results were recorded accordingly. The output revealed that all of the samples pass the 3 %/2 mm comparison by gamma index at 96.8%. The findings of this work supported the potential of wood-based phantom material in radiotherapy and medical physics application.